CN107083462B - A kind of blast furnace cooling stave and its processing technology that multilayer is cooling - Google Patents
A kind of blast furnace cooling stave and its processing technology that multilayer is cooling Download PDFInfo
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- CN107083462B CN107083462B CN201710521659.5A CN201710521659A CN107083462B CN 107083462 B CN107083462 B CN 107083462B CN 201710521659 A CN201710521659 A CN 201710521659A CN 107083462 B CN107083462 B CN 107083462B
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- C—CHEMISTRY; METALLURGY
- C21—METALLURGY OF IRON
- C21B—MANUFACTURE OF IRON OR STEEL
- C21B7/00—Blast furnaces
- C21B7/10—Cooling; Devices therefor
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B22—CASTING; POWDER METALLURGY
- B22C—FOUNDRY MOULDING
- B22C9/00—Moulds or cores; Moulding processes
- B22C9/02—Sand moulds or like moulds for shaped castings
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B22—CASTING; POWDER METALLURGY
- B22C—FOUNDRY MOULDING
- B22C9/00—Moulds or cores; Moulding processes
- B22C9/22—Moulds for peculiarly-shaped castings
- B22C9/24—Moulds for peculiarly-shaped castings for hollow articles
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- Chemical & Material Sciences (AREA)
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Abstract
The invention discloses a kind of cooling blast furnace cooling stave of multilayer and its processing technologys, belong to cooling wall field.Processing technology of the invention, comprising the following steps: one, cooling wall Wooden Pattern Making；Two, sand mold production and the arrangement of cooling water pipe: cooling wall wooden model is put into sandbox, jolt ramming sand molding, takes out cooling wall wooden model shape forming cavity, it is intracavitary that cooling water pipe is arranged in the type；Cooling water pipe includes the first cooling water pipe, the second cooling water pipe and third cooling water pipe；Three, molten steel is injected into type chamber to start to cast；Four, it is cooled and shaped after casting.The present invention overcomes the shortcomings of that cooling wall is easy to happen cooling water pipe burn through, enhance cooling effect by being laid with multilayer cooling tube in cooling wall, and strict control process, it is effectively prevent cooling water pipe burn through, reaches the technical effect of " melt but not thaw " and " seamless fusion ".
Description
Technical field
The present invention relates to cooling wall technical field, more specifically to a kind of cooling blast furnace cooling stave of multilayer and its
Processing technology.
Background technique
Cooling wall is that cooling equipment is provided for metallurgy high furnace, and metallurgy high furnace can be protected from high temperature fluid in furnace body
Erosion and mechanical wear extend the metallurgy high furnace service life, guarantee that its safety and stability produces.Cooling equipment once goes wrong, metallurgy
Blast furnace must comprehensive stop production to overhaul, it will brings heavy economic losses.So the service life of cooling wall and performance determine metallurgy high furnace
Service life, be metallurgy high furnace long-service life high-efficiency, energy-efficient important guarantee.The cooling wall material that current line generallys use in the industry is with cast steel
Based on cooling wall, but there are still many deficiencies.
The basic material of cast steel cooling wall be the very high low-carbon alloy steel of fusing point, generally all select it is identical as basic material or
Similar mild steel hot rolled seamless steel tube is as cooling pipe, to obtain good heat-conducting effect.Due to the shape of cooling pipe
Complicated irregular shape is often designed to according to the specifically used occasion of cooling wall, so generally can only be raw using casting technique
It produces, however in casting process, even if cooling pipe temperature is reduced using common air cooling, the oily types of cooling such as cold, but by
It is very high in cast steel liquid steel temperature, still it is easy to make cooling pipe to deform and burn through, it especially may be in casting process
The danger that set off an explosion because the thermal current sharply expanded has little time discharge, this casting problem never obtains for a long time
It solves very well.Currently, preventing cooling water pipe burn through in the casting process of cast steel cooling wall, and make its " melt but not thaw ", is casting
Make the maximum difficult point in technique；Secondly, the cooling uniformity of cooling wall be also always in the target of pursuit in industry, and at present it is general
All over the cooling wall of application, its cooling effect still has very big optimization space.
By patent retrieval, the production method about cast steel cooling wall has relevant technical solution and discloses.Specially such as China
Sharp application number: 2014105920452, the applying date: on October 29th, 2014, invention and created name are as follows: a kind of blast furnace cast steel is cold
But wall and its manufacturing method, the steps include: step 1: one end of the cooling water pipe before bend pipe be blocked, from the another of cooling water pipe
Load high temperature resistant filler in one end；Cooling water pipe after filling high temperature resistant filler is pressed into elbow sequence on bending machine and carries out clod wash behaviour
Make；Step 2: the preparation of molding sand includes the preparation of facing sand and floor sand；Step 3: carrying out moulding using molding sand；Cast steel cooling wall
At 1610~1620 DEG C, cast temperature is controlled within 1550~1560 DEG C for molten steel tapping temperature of casting control；Step 4: subsequent
Processing.This application makes cooling water pipe and cast steel cooling wall ontology is seamless fuses together, cold in high-temperature molten steel packet tip-off
But the tube wall of water pipe will not burn through, but this application needs to configure special high temperature resistant filler, cause production cost on
It rises, a kind of more optimized scheme is still desired in industry to solve the problems, such as the burn through of cooling water pipe.
Summary of the invention
1. technical problems to be solved by the inivention
It is an object of the invention to overcome in the prior art blast furnace cooling stave be easy to happen cooling water pipe burn through, cooling effect
Bad deficiency provides a kind of blast furnace cooling stave and its processing technology that multilayer is cooling, by being laid with multilayer in cooling wall
Cooling tube enhances cooling effect, and strict control process, effectively prevent cooling water pipe burn through, reaches " melt but not thaw "
And the technical effect of " seamless fusion ".
2. technical solution
In order to achieve the above objectives, technical solution provided by the invention are as follows:
A kind of processing technology of the cooling blast furnace cooling stave of multilayer of the invention, comprising the following steps:
Step 1: cooling wall Wooden Pattern Making and detection: cooling wall wooden model is made according to the planform of cooling wall ontology, and
The shape and size precision of the cooling wall wooden model is detected, qualified product is selected to enter subsequent processing；
Step 2: sand mold production and the arrangement of cooling water pipe: cooling wall wooden model is put into sandbox, jolt ramming sand molding,
Cooling wall wooden model shape forming cavity is then taken out, it is intracavitary that cooling water pipe is arranged in the type；Cooling water pipe include the first cooling water pipe,
Second cooling water pipe and third cooling water pipe, wherein the second cooling water pipe and third cooling water pipe are layed in same layer, second is cold
But water pipe is to one end by plesiotype cavity length direction in laterally snakelike distribution, and third cooling water pipe is to by plesiotype cavity length direction
For the other end in laterally snakelike distribution, the first cooling water pipe is individually set to one layer, and the first cooling water pipe is along type cavity length direction from one
End extends to the other end in longitudinal snakelike distribution；
Start to cast Step 3: injecting molten steel into type chamber, molten steel flow direction is gradually to cast from bottom to top；
Step 4: being cooled and shaped after casting: first natural cooling 20 after casting~for 24 hours, then natural cooling 2 of unpacking~
3h, cooling wall sheet is body formed, takes out cooling wall ontology and does subsequent cleaning.
Further, the medial surface length and width dimensions for offering embedding brick slot in step 1 on cooling wall wooden model compare cooling wall
Ontology is big by 1.6%~1.8%, and lateral surface length and width dimensions of the cooling wall wooden model far from embedding brick slot are bigger than cooling wall ontology by 2.1%
~2.2%.
Further, the equal spaced points weldering in every layer of cooling water pipe lower part being laid in step 2 is fixed with chill.
Further, chill is laminated structure, and the chill for being fixed on the straight pars infrasegmentalis of cooling water pipe is rectangular body plate shape
Structure.
Further, the chill for being fixed on cooling water pipe U-bend tune lower part is the U-shaped piece matched with the bending section
Shape structure, the chill of U-shaped are looped around the entire bending pars infrasegmentalis of cooling water pipe.
Further, the thickness H1 of chill is the 1/2~2/3 of cooling water pipe wall thickness H 2；The chill list of rectangular body plate shape
Leaf length is 5~6cm, and width is 4~5cm, and cooling water pipe is straight, and pars infrasegmentalis uniform intervals are equipped at least one block of chill, cooling water
The total length L 1 for managing straight pars infrasegmentalis chill is the 1/35~1/20 of the straight segment length L2 of cooling water pipe.
Further, the chill of cooling water pipe U-bend tune lower part is obliquely installed towards close to U-shaped opening direction.
Further, the chill of the straight pars infrasegmentalis of cooling water pipe is obliquely installed, and between horizontal plane angle α be 5 °~
10°。
Further, the adjacent two pieces of chill inclined directions of the straight pars infrasegmentalis of cooling water pipe are opposite, and multi-disc chill is in cooling
Water pipe is straight, and pars infrasegmentalis forms interval inverse type setting.
A kind of cooling blast furnace cooling stave of multilayer of the invention, including cooling wall ontology, the cooling wall ontology use institute
The processing technology stated is made.
3. beneficial effect
Using technical solution provided by the invention, compared with prior art, there is following remarkable result:
(1) processing technology of the cooling blast furnace cooling stave of a kind of multilayer of the invention, by ingenious in cooling water pipe bottom
Spot welding sheet chill cooperates factors such as itself and high temperature resistant filler in cast temperature, cooling water pipe etc., is ensureing that chill is sufficiently complete
While running down, also there is good protective effect to cooling water pipe tube wall, keep its melt but not thaw, with final cooling wall ontology
Between good seamless fusion, ensured the good cooling effect of cooling wall ontology.
(2) processing technology of the cooling blast furnace cooling stave of a kind of multilayer of the invention, is designed using the double-deck three-tube type, can be shown
The cooling effect of enhancing final products cooling wall ontology is write, snakelike trend can effectively increase the distribution length of cooling water pipe, cooling
Range and cooling uniformity, and the snakelike of two layers cooling water pipe moves towards that staggered form in length and breadth is presented, in cooling wall ontology laterally and
The cooling uniformity of longitudinal extent further increases.
(3) processing technology of the cooling blast furnace cooling stave of a kind of multilayer of the invention, is fixed under cooling water pipe flat segments
The chill in portion is cuboid laminated structure, and the chill for being fixed on cooling water pipe U-bend tune lower part is to match with the bending section
U-shaped laminated structure, the thickness H1 of chill is the 1/2~2/3 of cooling water pipe wall thickness H 2, and cooling water pipe section is straight, and pars infrasegmentalis is cold
The total length L 1 of iron is the 1/35~1/20 of the straight segment length L2 of this section of cooling water pipe, very big using this spacer sheet formula structure
Ground avoids the risk for being difficult to be completely melt between molten steel a period of time, ensures that chill can be melted and be kept away completely by molten steel
Exempt from the good result that cooling water pipe burn through is reached to " melt but not thaw " and " seamless fusion ".
(4) processing technology of the cooling blast furnace cooling stave of a kind of multilayer of the invention, cooling water pipe is straight pars infrasegmentalis it is cold
Iron is obliquely installed, and angle α is 5 °~10 ° between horizontal plane, cooling water pipe is straight adjacent two pieces of chill inclination sides of pars infrasegmentalis
To opposite, multi-disc chill forms interval inverse type setting in the straight pars infrasegmentalis of cooling water pipe, when so that molten steel gradually being stretched upwards,
Inclined direction ecto-entad along chill is gradually melted, and being completely melt for chill is on the one hand helped speed up, on the other hand
Cooling water pipe lower part can obtain gradually formula cooling in the temperature larger range of molten steel in the width direction, prevent molten steel finally will be upper
Portion's cooling water pipe burn through especially avoids the high temperature to cooling water pipe bottom and sidewall edge from washing away.
Detailed description of the invention
Fig. 1 is a kind of processing process figure of the cooling blast furnace cooling stave of multilayer of the invention；
Fig. 2 is a kind of structural schematic diagram of the cooling blast furnace cooling stave of multilayer of the invention；
Fig. 3 is a kind of cooling cooling water pipe of cooling wall of blast furnace arrangement schematic diagram of multilayer of the invention；
Fig. 4 is the position view of chill below cooling water pipe in the present invention；
Fig. 5 is the arrangement schematic diagram of chill below cooling water pipe in the present invention；
Fig. 6 is the structural schematic diagram of chill below cooling water pipe bending section in the present invention；
Fig. 7 is the pressure testing detecting state schematic diagram of cooling wall in the present invention；
Fig. 8 is the structural schematic diagram of manometric module in the present invention；
Fig. 9 is the structural schematic diagram of double manometric modules in the present invention.
Label declaration in schematic diagram: 1, cooling wall ontology；101, embedding brick slot；102, the first cooling water pipe；103, second
Cooling water pipe；104, third cooling water pipe；105, the first water inlet；106, the first water outlet；107, the second water inlet；108,
Two water outlets；109, third water inlet；110, third water outlet；111, chill；2, manometric module；201, fixed ring；202, it pushes up
Tight part；203, connecting rod；204, top flat；205, gland；206, compressing member；3, double manometric modules；301, bottom fixing sleeve；302, side
Top tight pieces；303, side regulating tank；304, fixed link；305, upper top cover；306, upper top tight pieces；307, upper regulating tank；308, Fen Ding
Piece.
Specific embodiment
To further appreciate that the contents of the present invention, in conjunction with attached drawing, the present invention is described in detail.
The present invention will be further described with reference to the examples below.
Embodiment 1
A kind of processing technology of the cooling blast furnace cooling stave of the multilayer of the present embodiment, comprising the following steps:
Step 1: cooling wall Wooden Pattern Making and detection: cooling wall wooden model is made according to the planform of cooling wall ontology 1,
And the shape and size precision of the cooling wall wooden model is detected, select qualified product to enter subsequent processing；The knot of cooling wall ontology 1
Structure is as shown in Figures 2 and 3, and for orientation in Fig. 2, the bottom surface of 1 lower part of cooling wall ontology is inward facing surface, cooling wall ontology
Embedding brick slot 101 is offered on 1 medial surface, for inlaying refractory brick；It should be noted that offering embedding brick on cooling wall wooden model
The medial surface length and width overall dimensions of slot 101 are than cooling wall ontology 1 big 1.6%, outside of the cooling wall wooden model far from embedding brick slot 101
For face length and width overall dimensions than cooling wall ontology 1 big 2.1%, the pre-expanded design of cooling wall wooden model effectively prevents subsequent casting
And because of the problem that 1 dimensional accuracy of cooling wall ontology caused by the contraction of molten steel is not high in cooling procedure, help to ensure cooling
The machining accuracy of wall ontology 1.
Step 2: sand mold production and the arrangement of cooling water pipe: will test qualified cooling wall wooden model and be put into suitable sandbox
In, and corresponding runner system is set, then jolt ramming sand molding, takes out cooling wall wooden model then formation and cooling wall in sandbox
Cooling water pipe, is arranged in that the type is intracavitary, and having been filled with inside cooling water pipe can be resistant to high temperature by the identical type chamber of 1 shape of ontology
Chrome ore specifically can be filled in filler material；It should be noted that using double-layer cooling structure in the present embodiment, cooling water pipe includes
First cooling water pipe 102, the second cooling water pipe 103 and third cooling water pipe 104, as shown in Fig. 2, wherein the first cooling water pipe
102 are individually layed in one layer close to 1 lateral surface of cooling wall ontology, and the second cooling water pipe 103 and third cooling water pipe 104 are then total
With one layer be layed in close to 1 medial surface of cooling wall ontology, if right side is shown in solid in Fig. 3, the second cooling water pipe 103 is by second
Water inlet 107 starts to the right end by plesiotype cavity length direction in laterally snakelike distribution, and returns to the left after arrival type chamber right end
It is extended down to the second water outlet 108；If left side is shown in solid in Fig. 3, third cooling water pipe 104 is first extended to by third water inlet 109
Then the left end in type cavity length direction is extended down to third water outlet 110 in laterally snakelike time, the second cooling water pipe 103 and third are cold
But water pipe 104 is laid with throughout same plane jointly；As shown in phantom in Figure 3, the first cooling water pipe 102 is by the first water inlet 105
Extend along type cavity length direction and Hui Yan is in longitudinal snakelike arrangement, is finally connected with the first water outlet 106.
The present embodiment can significantly increase the cooling effect of final products cooling wall ontology 1, snake using the double-deck three-tube type design
Shape moves towards to effectively increase the distribution length, cooling range and cooling uniformity of cooling water pipe, and two layers cooling water pipe is snakelike
It moves towards that staggered form in length and breadth is presented, the cooling uniformity of horizontal and vertical range in cooling wall ontology 1 is further increased, it is real
When border is arranged, the double-deck cooling water pipe is fixed as an entirety first by operator, is then uniformly put into above-mentioned type chamber.
Step 3: runner system injects molten steel into type chamber and starts to cast, and communicates with type chamber after cooling water pipe is arranged
The casting gate for dividing running channel be located at the bottom of type chamber, molten steel flow direction is gradually to be cast from bottom to top type is intracavitary, such as Fig. 4 institute
Show that arrow direction is molten steel flow casting direction；Cast temperature is controlled at 1500 °~1580 °, and cast temperature is excessively high, molten steel heat
Excessive, easily by cooling water pipe burn through, and cast temperature is too low, and molten steel heat is too small, and is easy to cause not melting for cooling water pipe
It closes or fuses and is insufficient；Casting molten steel goes out the 3~5min that first calms after casting ladle, then just initially enters running channel casting, can be effective
Removal of impurities exhaust, reduces subsequent casting flaw；Using the casting mode of " both ends are slow, intermediate fast " when casting, first opens at a slow speed and pour, work as steel
When liquid is close to cooling water pipe position, accelerates casting, molten steel is allowed quickly to wrap up cooling water pipe, avoids generating cold shut phenomenon, work as molten steel
When liquid level is more than cooling water pipe, gradually reduction of speed is cast, until changing by riser after-teeming after molten steel enters in riser until casting terminates.
It is worth noting that although in cooling water pipe filled with chrome ore etc can high temperature resistant filler, molten steel high temperature
Still easily make when casting cooling water pipe deform even burn through, especially cooling water pipe snakelike arrangement when, it is complex-shaped,
Bending angle is big, is easier to be deformed burn through problem when being washed away by molten steel, is to find always to cooling water pipe energy in the industry
The casting mode more preferably protected.
The present embodiment is the high temperature burn through for avoiding molten steel to cooling water pipe, adds chill 111 using in cooling water pipe bottom
Mode suitably cooled to close to the molten steel temperature of cooling water pipe, alleviate it and high temperature of cooling water pipe washed away,
Specifically, the equal spaced points weldering in every layer of cooling water pipe lower part being laid in step 2 is fixed with chill 111, i.e. the first cooling water pipe
102, the second cooling water pipe 103 and 104 bottom of third cooling water pipe are equipped with chill 111.
Be directly welded at cooling water pipe outer surface using chill in industry and cast early has application, but application effect in fact
Very different, the various aspects factor such as set-up mode, arrangement position of chill all has a significant impact final casting effect, row
Also often occur in the industry chill melted in casting process not exclusively, the overall mechanical properties of destroying cooling water pipe and cooling wall,
The problems such as promoting air gap generation, severe exacerbation cooling wall heat transfer property, causes many problems to production practices.Inventor is based on this
It has been devoted to ensure that molten steel can melt completely chill to how accurately to control research of the chill to molten steel cooling effect,
It is avoided that the good result that cooling water pipe burn through is reached to " melt but not thaw " and " seamless fusion " again.It is latent by many years
Heart research and practical proof, inventor have pleasantly surprised discovery finally！
Chill 111 in the present embodiment is laminated structure, wherein the chill 111 for being fixed on the straight pars infrasegmentalis of cooling water pipe is
Cuboid laminated structure (such as Fig. 5), the chill 111 for being fixed on cooling water pipe U-bend tune lower part are to match with the bending section
U-shaped laminated structure (such as Fig. 6), the chill 111 of U-shaped is looped around the entire bending pars infrasegmentalis of cooling water pipe, and the thickness of chill 111
1/2 that H1 is cooling water pipe wall thickness H 2 is spent, the 111 monolithic length of chill of rectangular body plate shape is 6cm, width 4cm, cooling water pipe
Straight pars infrasegmentalis uniform intervals are equipped at least one block of chill 111, the total length L 1 of cooling water pipe section is straight pars infrasegmentalis chill 111
It is the 1/20 of this section of straight segment length L2 of cooling water pipe, as shown in figure 5, the flat segments base point of the first cooling water pipe 102 is welded with 4
Piece chill 111.The wind for being difficult to be completely melt between molten steel a period of time is largely avoided using this spacer sheet formula structure
Danger, inventor's multiple authentication find thoroughly melt simultaneously noresidue when the casting of this chip-size chill 111.
Further to ensure chill 111 to the uniformity cooling effect of molten steel, prevent cooling water pipe occur section type burn through,
Phenomena such as state is different is fused with cooling wall ontology 1, as shown in figure 4, the inclination of chill 111 of the straight pars infrasegmentalis of cooling water pipe is set
It sets, and angle α is 5 ° between horizontal plane, and as shown in figure 5, adjacent two blocks of chills 111 inclination of the straight pars infrasegmentalis of cooling water pipe
Direction is opposite, and multi-disc chill 111 forms interval inverse type setting in the straight pars infrasegmentalis of cooling water pipe, and cooling water pipe U-bend is bent
The chill 111 of pars infrasegmentalis is obliquely installed towards close to U-shaped opening direction, and the snakelike arrangement of cooling water pipe is so that two adjacent flex
The U-shaped opening of section is opposite, the two adjacent U-shaped chills 111 in its underpart also proper relative tilt.Chill 111 be obliquely installed so that
When molten steel is gradually stretched upwards, the inclined direction ecto-entad along chill 111 is gradually melted, and is on the one hand helped speed up cold
Iron 111 is completely melt, the larger model of temperature of another aspect cooling water pipe lower part (left and right directions in Fig. 4) molten steel in the width direction
Gradually formula cooling can be obtained in enclosing, and prevent molten steel from finally especially avoiding top cooling water pipe burn through to cooling water pipe bottom
The high temperature of portion and sidewall edge washes away；And multi-disc chill 111 forms interval inverse type setting (such as in the straight pars infrasegmentalis of cooling water pipe
Shown in Fig. 5), not only having prevented two panels chill 111 to be overlapped influence, it is completely melt, but also equal to the molten steel of cooling water pipe two sides width direction
Carry out temperature drop appropriate, temperature drop uniformity and temperature drop range all make moderate progress molten steel in range below the cooling water pipe, to realization
Cooling water pipe is molten very important without the effect worn；Similarly, the chill 111 of cooling water pipe U-bend pars convoluta bottom uses U-shaped thin slice
Inclination, temperature drop uniformity and cooling range to molten steel below the bending section are also adjusted, and ensure the seamless of the bending section
Fusion.
The present embodiment is by making itself and cast temperature, cooling water pipe in the ingenious spot welding sheet chill 111 in cooling water pipe bottom
The cooperation such as factors such as interior high temperature resistant filler also has cooling water pipe tube wall while ensureing that chill 111 is sufficiently completely melt
Good protective effect keeps its melt but not thaw, and good seamless fusion, has ensured cooling wall between final cooling wall ontology 1
The good cooling effect of ontology 1.
Step 4: being cooled and shaped after casting: after casting first natural cooling for 24 hours, then the natural cooling 2h that unpacks, to disappear
It except casting internal stress, thinning microstructure, and prevents cooling wall ontology 1 from deforming, after molding, takes out cooling wall ontology 1 and do subsequent clear
Reason.Subsequent processing includes removing 1 appearance of cooling wall ontology to float sand, then recycles the chrome ore filled in cooling water pipe, and try
Pressure and cross ball test etc., further the casting quality of detection confirmation cooling wall ontology 1 and cooling water pipe, pressure testing and to cross ball test equal
Finishing processing is carried out to cooling wall ontology 1 again after qualification, its surface quality is improved, finally obtains a kind of blast furnace cooling stave.Cross ball
When test, the diameter of ball is 0.75~0.76 times of cooling water pipe internal diameter, and ball is put into cooling water pipe one end, logical with high-pressure air hose
Wind crosses ball, and ball is made to fly out from the other end of cooling water pipe as qualification.The blast furnace cooling stave function admirable that the present embodiment processes,
For the qualification rate of pressure testing and ball test excessively close to 100%, operating personnel does not have found cooling water pipe burn through through a large amount of practical proofs
Or drainage, application security obtain effective guarantee.
The blast furnace cooling stave that the present embodiment processes, including cooling wall ontology 1, as shown in fig. 7, cooling wall ontology 1 is interior
Side is offered for inlaying the embedding brick slot 101 of refractory brick, then offers corresponding the on the lateral surface of cooling wall ontology 1 respectively
One water inlet 105 and the first water outlet 106, the second water inlet 107 and the second water outlet 108, third water inlet 109 and third go out
The mouth of a river 110, the end of each layer cooling water pipe extend to the outside of cooling wall ontology 1 by above-mentioned inlet/outlet respectively, and pressure testing is surveyed
Manometric module 2 is then used to carry out when examination, two cooperations of manometric module 2 are used as one group of use, respectively correspond and are set in a cooling
The water inlet end of water pipe and water outlet, the pressure drop by detecting water inlet end and water outlet are judged.
As shown in figure 8, manometric module 2 includes the fixed ring 201 being set on the cooling water pipe of outside, the side of fixed ring 201
It is circumferentially surrounded on wall equipped with top tight pieces 202 (puller bolt specifically can be used), it is solid by connecting rod 203 above fixed ring 201
It is connected with gland 205, is equipped with compressing member 206 (hold-down bolt specifically can be used) above gland 205,205 lower section of gland is then equipped with top
Manometric module 2 is set on cooling water pipe by piece 204, when use, and top tight pieces 202 hold out against cooling water pipe side wall, top flat from multidirectional
204 are pressed in water inlet end/water outlet of cooling water pipe and are compressed by compressing member 206, are additionally provided with gasket in top flat 204, are pressed in
The top flat 204 of cooling water pipe water inlet end is connected with high-pressure water pipe, is filled the water by the high-pressure water pipe into the cooling water pipe, high pressure water
Pipe is equipped with pressure gauge；The top flat 204 for being pressed in the cooling water pipe water outlet is then connected with drainpipe, and the moisture of injection is finally through being somebody's turn to do
Drainpipe discharge, it is notable that it is adjacent on the drainpipe in the present embodiment to set there are two load cell, and two survey pressures are first
Part respectively with upper mechatronics.Specifically, which can be used pressure transmitter, and pressure signal is converted to simulation letter
Number and be transferred to host computer, received signal is carried out display and automatic processing by host computer, by the cooling water pipe water inlet end and
The hydraulic pressure of water outlet is compared, and illustrates there are the abnormal phenomenon such as leak inside cooling water pipe if pressure drop is beyond a certain range,
It is additionally provided with warning device in host computer, if being abnormal and alarm, reminds operating personnel.The present embodiment is believed by pressure
Number conversion and host computer Automatic data processing, reading/calculating pressure data is directly removed without operating personnel, was both alleviated
Labor intensity in turn avoids the detection error because of caused by artificial reading/calculating mistake, improves detection accuracy.
Two load cells are arranged in the present embodiment on drainpipe, can be greatly compared with the single load cell of traditional setting
Ground improves the accuracy of pressure testing test, convenient for finding whether two load cells are in normal operating conditions, two surveys in time
When the pressure difference of element being pressed to exceed a certain range, then explanation has load cell to be in abnormality, at this time can be to load cell
Accuracy carries out detection confirmation, so can effectively avoid detecting caused by damaging discovery not in time because of single load cell and miss
Difference, two load cells are arranged jointly can still keep normally detecting when a certain load cell damages, and do not influence to detect
Progress.
As shown in fig. 7, the cooling wall ontology 1 of the present embodiment is equipped with the double-deck three-stage cooling water pipe, multiple cooling water pipes are stretched
It is close may to compare concentration for the part of cooling wall ontology 1 out, such as between the second water inlet 107 and third water inlet 109, second goes out
The distance between the mouth of a river 108 and third water outlet 110 are all closer to, using when above-mentioned manometric module 2 due to space limitation then
Use while cannot achieve two groups of manometric module 2, i.e., can not be simultaneously to the second cooling water pipe 103 and third cooling water pipe 104
Pressure testing detection is carried out, and single cooling water pipe can only be detected one by one, detection efficiency is to be improved.The present embodiment is directed to this
The Structural assignments that two cooling water pipe water inlet ends of kind/water outlet end position is concentrated detect while two cooling water pipes, specially to realize
Door devises double manometric modules 3, and double manometric modules 3 are also two one group when using and are used cooperatively, one of them is set in two
The water inlet end of cooling water pipe, another is then set in the water outlet of two cooling water pipes.
As shown in figure 9, double manometric modules 3 include bottom fixing sleeve 301, circumferentially arranged with two on the side wall of bottom fixing sleeve 301
It organizes side top tight pieces 302 (puller bolt specifically can be used), upper top cover is fixed with by fixed link 304 above bottom fixing sleeve 301
305, top tight pieces 306 (puller bolt specifically can be used) on two groups are equipped with above upper top cover 305, correspondence is set below upper top cover 305
There are two top flat 308 is divided, application method is same as above, and bottom fixing sleeve 301 is set on two cooling water pipes, is held out against by two groups of sides
Part 302, which respectively corresponds, holds out against two cooling water pipes, and every group of side top tight pieces 302 include three puller bolts in angular distribution,
It should be noted that wherein one group of side top tight pieces 302 is movable design, and as shown in Figure 9, the side in 301 left side of bottom fixing sleeve
Corresponding before and after wall to offer the side regulating tank 303 being distributed along its length, side top tight pieces 302 pass through the side regulating tank 303 can
With flexible modulation, it holds out against position, adapts it to the spacing distance between two cooling water pipes；Accordingly, 305 left side of upper top cover
Upper top tight pieces 306 be also configured as movable, the left side of upper top cover 305 offers regulating tank 307, upper top tight pieces along its length
306, which pass through regulating tank 307 on this, it to hold out against position with flexible modulation；Divide the design and the structure of above-mentioned top flat 204 of top flat 308
It is identical, in use, holding out against the side top tight pieces 302 on right side on a certain cooling water pipe, right side to divide top flat 308 to be pressed in a certain cold
But it water inlet end/water outlet of water pipe and compresses, the side top tight pieces 302 in left side and upper is then adjusted according to another cooling water pipe position
The position of top tight pieces 306, dividing left side top flat 308 to be pressed in water inlet end/water outlet of another cooling water pipe and compress, two groups double
The fastening of manometric module 3 terminates to start to detect.Two cooling water pipe port positions have effectively been evaded in the design of double manometric modules 3
The problem of spacing deficiency designs in the gap of two cooling water pipe ports without any structure, even two close adjacent
Cooling water pipe can also be used double manometric modules 3 while be detected, and effectively increase detection efficiency.
Embodiment 2
A kind of processing technology of the cooling blast furnace cooling stave of multilayer of the present embodiment is different substantially with embodiment 1
It is:
The medial surface length and width overall dimensions for offering embedding brick slot 101 in the present embodiment step 1 on middle cooling wall wooden model compare
Cooling wall ontology 1 big 1.8%, lateral surface length and width overall dimensions of the cooling wall wooden model far from embedding brick slot 101 are than cooling wall ontology 1
It is big by 2.2%；
The thickness H1 of chill 111 is the 2/3 of cooling water pipe wall thickness H 2 in the present embodiment, and the chill 111 of rectangular body plate shape is single
Leaf length is 5cm, width 5cm, and the total length L 1 of cooling water pipe section is straight pars infrasegmentalis chill 111 is the cooling water pipe Duan Ping
The chill 111 of the 1/35 of straight section length L2, cooling water pipe is straight pars infrasegmentalis is obliquely installed, and angle α is between horizontal plane
10°。
First natural cooling 20h after casting in the present embodiment step 4, then the natural cooling 3h that unpacks.
Embodiment 3
A kind of processing technology of the cooling blast furnace cooling stave of multilayer of the present embodiment is different substantially with embodiment 1
It is:
The medial surface length and width overall dimensions for offering embedding brick slot 101 in the present embodiment step 1 on middle cooling wall wooden model compare
Cooling wall ontology 1 big 1.7%, lateral surface length and width overall dimensions of the cooling wall wooden model far from embedding brick slot 101 are than cooling wall ontology 1
It is big by 2.2%；
The 111 monolithic length of chill of rectangular body plate shape is 5.5cm, width 4.5cm, cooling water pipe section in the present embodiment
The total length L 1 of straight pars infrasegmentalis chill 111 is the 1/30 of the straight segment length L2 of this section of cooling water pipe, under cooling water pipe flat segments
The chill 111 in portion is obliquely installed, and angle α is 8 ° between horizontal plane；
First natural cooling 22h after casting in the present embodiment step 4, then the natural cooling 2.5h that unpacks.
Schematically the present invention and embodiments thereof are described above, description is not limiting, institute in attached drawing
What is shown is also one of embodiments of the present invention, and actual structure is not limited to this.So if the common skill of this field
Art personnel are enlightened by it, without departing from the spirit of the invention, are not inventively designed and the technical solution
Similar frame mode and embodiment, are within the scope of protection of the invention.
Claims (4)
1. a kind of processing technology of the cooling blast furnace cooling stave of multilayer, which comprises the following steps:
Step 1: cooling wall Wooden Pattern Making: making cooling wall wooden model according to the planform of cooling wall ontology (1)；
Step 2: sand mold production and the arrangement of cooling water pipe: cooling wall wooden model being put into sandbox, jolt ramming sand molding, then
Cooling wall wooden model shape forming cavity is taken out, it is intracavitary that cooling water pipe is arranged in the type；Cooling water pipe includes the first cooling water pipe
(102), the second cooling water pipe (103) and third cooling water pipe (104), wherein the second cooling water pipe (103) and third cooling water
Pipe (104) is layed in same layer, and the second cooling water pipe (103) is in laterally snakelike distribution to the one end in plesiotype cavity length direction is leaned on,
For third cooling water pipe (104) to the other end by plesiotype cavity length direction in laterally snakelike distribution, the first cooling water pipe (102) is single
It is solely set to one layer, the first cooling water pipe (102) extends to the other end in longitudinal snakelike distribution from one end along type cavity length direction；Paving
If the equal spaced points weldering of every layer of cooling water pipe lower part be fixed with chill (111)；Chill (111) is laminated structure, is fixed on cooling
The chill (111) of water pipe is straight pars infrasegmentalis is cuboid laminated structure；Chill (111) inclination of cooling water pipe is straight pars infrasegmentalis is set
It sets, and angle α is 5 °~10 ° between horizontal plane, adjacent two blocks of chills (111) the inclined direction phase of pars infrasegmentalis that cooling water pipe is straight
It is right, multi-disc chill (111) in the straight pars infrasegmentalis of cooling water pipe along cooling water pipe flat segments axis direction be it is symmetrical, it is anti-to form interval
It is arranged to formula；The thickness H1 of chill (111) is the 1/2~2/3 of cooling water pipe wall thickness H 2；The chill (111) of rectangular body plate shape is single
Leaf length is 5~6cm, and width is 4~5cm, and cooling water pipe is straight, and pars infrasegmentalis uniform intervals are equipped at least one piece of chill (111),
The total length L 1 of cooling water pipe is straight pars infrasegmentalis chill (111) is the 1/35~1/20 of the straight segment length L2 of cooling water pipe；
Start to cast Step 3: injecting molten steel into type chamber, molten steel flow direction is gradually to cast from bottom to top；
Step 4: being cooled and shaped after casting: first natural cooling 20 after casting~for 24 hours, then the 2~3h of natural cooling that unpacks, it is cold
But wall ontology (1) forms, and takes out cooling wall ontology (1) and does subsequent cleaning.
2. a kind of processing technology of the cooling blast furnace cooling stave of multilayer according to claim 1, it is characterised in that: step 1
The medial surface length and width dimensions for offering embedding brick slot (101) on middle cooling wall wooden model are bigger by 1.6% than cooling wall ontology (1)~
1.8%, lateral surface length and width dimensions of the cooling wall wooden model far from embedding brick slot (101) are bigger by 2.1% than cooling wall ontology (1)~
2.2%.
3. a kind of processing technology of the cooling blast furnace cooling stave of multilayer according to claim 1, it is characterised in that: be fixed on
The chill (111) of cooling water pipe U-bend tune lower part is the U-shaped laminated structure matched with the bending section, the chill of U-shaped
(111) it is looped around the entire bending pars infrasegmentalis of cooling water pipe.
4. a kind of processing technology of the cooling blast furnace cooling stave of multilayer according to claim 3, it is characterised in that: cooling water
The chill (111) of pipe U-bend tune lower part is obliquely installed towards close to U-shaped opening direction.
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| CN110732606B (en) * | 2019-10-24 | 2020-12-08 | 上海宝钢铸造有限公司 | Improved cooling tube type manufacturing method of cooling wall |
| CN111424125B (en) * | 2020-05-15 | 2021-08-24 | 马鞍山市润通重工科技有限公司 | Cast steel cooling wall with uniformly arranged cooling water pipe grooves and machining process thereof |
| CN115283652B (en) * | 2022-10-09 | 2022-12-20 | 南通衣之韵服饰有限公司 | Auxiliary treatment device after textile machinery part machining |
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| CN1422712A (en) * | 2001-12-14 | 2003-06-11 | 钢铁研究总院 | Non-thermal-resistance cast steel cooling wall and casting method |
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